linux-kernel - Re: [PATCH v6 1/3] spi/pl022: Add chip select handling via GPIO

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5043BBBE.30409@antcom.de>
Date:	Sun, 02 Sep 2012 22:04:14 +0200
From:	Roland Stigge <stigge@...com.de>
To:	shiraz hashim <shiraz.linux.kernel@...il.com>
CC:	linus.walleij@...aro.org, aletes.xgr@...il.com,
	broonie@...nsource.wolfsonmicro.com, grant.likely@...retlab.ca,
	rob.herring@...xeda.com, rob@...dley.net,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	spi-devel-general@...ts.sourceforge.net,
	gabriel.fernandez@...ricsson.com, lee.jones@...aro.org,
	viresh.kumar@...aro.org, sachin.verma@...co
Subject: Re: [PATCH v6 1/3] spi/pl022: Add chip select handling via GPIO

Hi Shiraz,

On 01/09/12 13:14, shiraz hashim wrote:
> On Wed, Aug 22, 2012 at 7:19 PM, Roland Stigge <stigge@...com.de> wrote:
>> @@ -2016,6 +2030,8 @@ pl022_probe(struct amba_device *adev, co
>>         pl022->master_info = platform_info;
>>         pl022->adev = adev;
>>         pl022->vendor = id->data;
>> +       /* Point chipselects to allocated memory beyond the main struct */
>> +       pl022->chipselects = (int *) pl022 + sizeof(struct pl022);
> 
> This is going beyond memory allocated for chipselects
> as it adds 4 * sizeof(struct pl022) bytes to pl022.
> 
> pl022->chipselects = (int *) &pl022[1];

Correct. Thanks for the heads up!

Funnily, my previous proposal way actually like you just proposed, but
we took the other one since it looked "better". ;-)

I'll provide an incremental bugfix patch since Mark already has the
commit in his misc.git tree.

Thanks again,

Roland
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/